kmeans 0.2.0

A Dart library for k-means clustering

A simple implementation of k-means clustering.

Clusters are initialized using the k-means++ method.

To evaluate the goodness of a clustering, and to find good values for k when one is not known a priori, this library includes a calculation of the silhouette of a clustering.

Usage

A simple usage example:

import 'package:kmeans/kmeans.dart';

main() {
  var kmeans = KMeans([
    [0.0, 0.0], [1.1, 1.1], [-5.0, -0.50], ...
  ]);
  var k = 3;
  var clusters = kmeans.compute(k);
  var silhouette = clusters.silhouette;
  print('The clusters have silhouette $silhouette');
  for (int i = 0; i < kmeans.points.length; i++) {
    var point = kmeans.points[i];
    var cluster = kmeans.clusters[i];
    var mean = kmeans.means[cluster];
    print('$point is in cluster $cluster with mean $mean.');
  }
  ...
  var bestCluster = kmeans.computeBest(
    minK: 3,
    maxK: 10,
  );
}

Features and bugs

Please file feature requests and bugs at the issue tracker.